TheAlarmTech.com

1200 baud on all panels.

P-01 N1000 IV v8.07.01
P-01 comm loop LED is orange
P-01 485 status LED is green

P-02 N1000 II-X v8.0.4.01
P-02 comm loop LED is orange & occasionally flashes

P-03 N1000 II v8.0.3
P-03 comm loop LED is orange & occasionally flashes

most likely you do not need winpak running 24/7, I would set the services to "AUTO" not "start"
so when winpak starts the services start and close winpak when not using it.

RS-485 can be a little tricky to trouble shoot.
start removing panels from the 485 dataline and see what happens.
it is not a bad panel.
also a C100 is for "20 mA Communication Loop" not rs-485
check post http://www.thealarmtech.com/forum/viewt ... t=c100#p33

Thanks Leo. We'll exit Winpak when we don't need to access the panels.

Looking for some expertise here. The alarm technician who originally installed our badge access system and panels has quite literally died. He was the subject matter expert for WIN-PAK and N-1000 panels at his company.

Several times each minute, P-02 throws a Panel Communication Alarm and then Panel Communication Normal.

We have 3 N-1000 panels called P-01, P-02, P-03. The comm loop is RS-485 and the master is P-01. P-02 and P-03 comm appears to be serially connected from P-01.

The WIN-PAK server is Windows7 Enterprise. Dual CPU and 4GB RAM. It's neither CPU nor memory burdened. WIN-PAK is all it runs.

The server has an external RS-232 to RS-486 C100 black brick with 4 LEDs (green orange green orange). The brick has 2 pair that connects to P-01 connector J1.

This was fine for about 6 months (we moved here in April 2013). The Panel Comm alarms started happening a few months ago. The serial cable runs about 20 feet server to panel and looks undamaged.

Is panel P-02 simply failing? I think it's original from the early 90s.